Chii chinonzi biodegradable plastic bags?
Biodegradable epurasitiki mabhegi ane hushamwari kwezvakatipoteredza epurasitiki mabhegi ayo anoshatisa kuva mvura uye kabhoni dhaokisaidhi kuburikidza microbial chiito mumamiriro composting, pasina kukonzera ivhu muchetura kana yechipiri kusvibiswa. Zvinhu zvakajairika zvinoshandiswa mukugadzira zvinosanganisira:
PBAT (polybutylene adipate/terephthalate), PLA (polylactic acid), PCL (polycaprolactone), PHA (polyhydroxyalkanoate), uye mamwe mapolymeri anoodza.
Ndeapi mamiriro ezvinhu apo mabhegi anoodegradable anodzikisira? Ndeapi mamiriro ekuderedzwa?
Kuderedzwa pasi pemamiriro ekugadzira manyowa
Composting mamiriro: Hunyoro huri pamusoro pe95%, ivhu, tembiricha (28-58 dhigirii), uye chaiyo tupukanana.
Chii chinonzi semi-mabhegi epurasitiki anoparara?
Zvishandiso zvinongoshatisa kuita zvidimbu zvidiki uye hazvigone kushandurwa kuita mvura uye kabhoni dhaibhoni mukati menguva yakatarwa. Zvishandiso zvinoparadza (zvakadai sed2W neP-Upenyu) wedzera 1-2% yephotooxidative agent kune zvechinyakare PE zvinhu. Kune zvakare zvinhu zvakasanganiswa zvePE uye starch, umo iyo starch chikamu chinogona kuderedzwa, asi iyo yasara PE chikamu haigone kuderedzwa.
Ndeipi chikamu chemabhegi epurasitiki anogona kuparara?
Zvinoenderana neEU uye yenyika zviyero, inopfuura 90% yezvikamu zveresin zvinofanirwa kuve zvakasvibiswa mumvura uye carbon dioxide.
Ndeupi musiyano uripo pakati pemabhegi anoodegradable nemabhegi epurasitiki akajairwa? Nzira yekuziva sei?
Mukuwedzera kune composting, nzira dzinotevera dzekuzivikanwa dzinotevera dziripo:
Infrared spectroscopy (kuenzanisa zvimiro zvemamorekuru) kukurumidza kuona kuumbwa kwemasaga epurasitiki
Chemical pyrolysis (biodegradable zvinhu zvinogona kukurumidza kuora pasi pemamiriro anopisa ealkaline, nepo mabhegi epurasitiki akajairwa asingadi)
Ndeipi sherufu yehupenyu hwemabhegi anogona kuparara?
Mwedzi 12 mune yakavharwa mamiriro (yakadzivirirwa kubva kunyoro, ivhu, chiedza, nezvimwewo)
Chii chinonzi PLA uye chii chinonzi PBAT?
PLA ipolymer yakagadzirwa nekushandura starch kuita lactic acid monomers kuburikidza nekuvirisa, iyo inobva yagadzirwa nemakemikari kuita polylactic acid.
PBAT ipolymer yakagadzirwa nemakemikari polymerizing adipic acid, terephthalic acid, uye butanediol.
Zvese zviri zviviri zvinhu zvinogona biodegrade kuita mvura uye kabhoni dhaibhoni mumamiriro ecompost.
Sei kuwedzera PBAT?
PBAT ine yakanakisa kuchinjika, processability, uye kuramba kune yakakwirira uye yakaderera tembiricha, iyo inogona kusangana nezvinodiwa zvemafirimu maapplication. Pamusoro pezvo, PBAT inowanikwa nevakawanda, iri nyore kugadzira-uye ine mutengo wakaderera-, zvichiita kuti ive chigadzirwa chakanakisa kutsiva polyolefin.
